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W. M. EAMES. Stove Ventilating Attachment. No. 104,286. Patented June 14, 1870.

NAPETERS. PHOTDLITHUGHAPHEH. WASHINGTONc D C.

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Letters Patent No. 104,286, dated June 14, 1870.

'VENTILATING ATTACHMENT .'EOR STOVES.

The Schedule referred to in these Letters Patent and making part ol the same To all 'whom it 'mayV concern Be it known-that I, WILLIAM M. EAMES, M. D., of Ashtabula, in the county of Ashtabula and State of Ohio, have invented a new and improved Venti lating Attachment for Stoves; and I do hereby declare that the following is a full, clear, and exact de scription thereof', reference being had to the accompanying drawing and to the letters of reference marked thereon.

Drawing.

Figure 1 is a vertical sectional elevation, taken through the fresh-air chamber on the linezz of iig. 3;

Figure 2 is a central vertical section, taken on the line :t :t of iig. 3; and

Figure 3 is a plan view with the top of thestove removed.

This invention relates to an improved Ventilatingattachment, to be applied to stoves, and has for its object to provide the means for carrying foul and impure air off through thel stove-pipe or chimney, and also to supply the room with fresh external. air; and to this end l `My invention consists in certain peculiarities of construction, whereby fresh cold air may be brought into a chamber adjoining or connected with the stove through a pipe connected with said chamber, and laid under the iloor andthrough the wall or walls of the building, to a point connecting with the external air, the air, when lreceived in said chamber, being heated, and thence admitted to the room or apartment through automatic or stationary registers, as the case-'may be, at the top ofsaid chamber; and l It also consists in a second chamber, having 'a reg- Yister for the admission of vitiated air, which, rising to the top of the chamber, is admitted th'roughilues in-4 to the fire-box of the stove, and is then carried off? up the stove-pipe or chimney with the products .of combustion, all of which will be hereinafter' more fully ex plained in its construction and mode of' operation, in the following specification and claim. lSimilar' letters of reference indicate identical parts in each of the gures.

In the annexed drawing forming a part of this specification- A represents the body of a stove. I

A', the posterior side, back of which my ventilating-attachment should be attached, as well for its convenience as for the healthfulness of the air.

B refers to the top, and B to the bottom, while B2 and Bs refer to its sides.

Where the castings of a stove are made with the. view of attaching my improved ventilatiug-apparatus thereto, the top, bottom, and sides, as also the partitions G and I), in fact, all the parts, may be cast -.W l a wit-h the other parts of the stove, but they may be constructed separately, in order that they may be attached to stoves already manufactured, in which case they can be made of cast or sheet iron, or any other material capable of withstanding the required heat.

Two apartments or chambers E F are formed hackof the stove proper by the partitions C D.

The chamber E has an aperture, e, that connects with a pipe which serves as a conduit for cold or fresh air, it being laid underthe o'or and through the partitions or walls of the house, and connect-ing with the external air.

This supply-pipe should have an elevation of three orfour feet at its outer end, in order to obtain air of l the 4proper humidity.

Va cone, and extending upward about two-thirds the height of the chamber immediately over the air-in ducting tube, and having air-escapes e e. The sec.

ond series is precisely7 like the first, except that the upper ends join the stove at the lower terminus of the stove-pipe, and extend downward to a point about even with the top of the registers.

f f represents the nes, vwhich lead from the vitiated-air chamber F tothe iiref-box.

The register E3 E3 may be made 'to have a lateral" motion, by which to govern the admission of freshlytempered air to the apartment, or it may be made to open upward by the mere action of the heated air, or any fornroi register may be employed.

The chamber F, for the reception of vitiated.air..

'made unwholesome by the respiration of the individ uals occupying the apartment, and from numerous other causes,"is receivedthrough the register f2, which, coming in contact with heated portions of the stove, rises, passing through the tubes f f yinto the iirechamber of the stove, and thence up the chimney, its ascent being vgreatly `accelerated by the immediate draught from the Vfire-bor; to the chimney.

'Ihe most recent demonstrations of scientific men, who have been giving their attention particularly-to the subject of heating and Ventilating dwellings, concert-hal1s, and the like, have shown that the greatest amount of power exerted upon the air should be at the point of discharge rather than at the point oi' induction, for it is said that is easier to forccair from an apartment than it is to force it in.

The impureair being forced out on one side, will cause the fresh air to iiow in on the other side of its ownrmotion. With this view I have so arranged that ,the greatest force shall be exerted to discharge the impure air.

v especially where large audiences are gathered.

By my improvements a continuous circulation of air is secured, viz., thevegress of vitiated air and the ingress of external air.

The advantage of having a chamber for warming the air is, -tl1at, by admitting cold air directly into an overheated room, not only are thc occupants lsuddenly lrendered uncomtbrtable, and their health endangered,

but the moisture in the air will, by being suddenly cooled, he deposited on the furniture and ornaments of the apartment, to the injury of' property.

With my arrangement the air is properly warmed,

and its relative'humidity is not impaired, as it is when it passes over a red-hot surface, in which event the air is burned, as shown by recent experiments;

henceit is that the increased temperature shouldbeI derived from a'moderately-heated surface.

I do not claim the application of heat to vtiated or impnre air, by means-of which motion is imparted to it and its discharge effected; neither do I claim passing external air over a heated surface, to warm it before4 its admission into an apartment for use; but,

Having thus described my invention, Vhat I do claim, and. desire to secure by Letters Patent of the United States, is The means herein described for introducing external airinto an apartment or'room, through an air-tube connecting with a drum or chamber, with the partitions Ez E?, for the distribution of the air over its heated surface, attached to the body of a stove, and

having registers or outlets, substantially as shown and described, and for the purpose speeilied.

In testimony whereof` I have signed my name to this specification, in the presence of two attcsting witnesses, this 26th day of March, 1870, at Ashtabula, Ohio.

WM. M. EAMES. Witnesses:

THEODORE HALL, EDGAR HALL. 

